There are lots of apps keeping your sensitive information safe on Android smartphone or tablet, such as contact and credit card details, users login information for sites. To prevent them from prying, I recommends using B-Folders Password Manager by JointLogic Ltd for the business.
B-Folders offers secure way to create folders for storing data like password, contact, task, bookmark and journal. All sensitive data is fully encrypted with 256-bit AES cipher and doesn't use with any 3rd parties cloud services. With their desktop client, you can easily sync your private information to Windows, Mac and Linux.
After giving up Palm smartphone, the app works like a charm on my Nexus 7 and Galaxy S2. I use it to store various types of passwords and backup. Effortless sync and transfer to Windows 7 desktop.